XF 1.2 Server Error Logs

[indicator]

I have updated my website to xf 1.2.5 there is notification "Server Error Logs"

Details as as follows
Fatal Error: Call to undefined method XenForo_Model_Deferred::setNextDeferredTime()

Error Info
ErrorException: Fatal Error: Call to undefined method XenForo_Model_Deferred::setNextDeferredTime() - deferred.php:21
Generated By: Unknown Account, 47 minutes ago
Stack Trace
#0 [internal function]: XenForo_Application::handleFatalError()
#1 {main}
Request State
array(3) {
["url"] => string(31) "http://youally.com/deferred.php"
["_GET"] => array(0) {
}
["_POST"] => array(3) {
["_xfRequestUri"] => string(1) "/"
["_xfNoRedirect"] => string(1) "1"
["_xfResponseType"] => string(4) "json"
}
}


What do we do with this , i don't know any thing about it, do i need to fix something or everything is alright?

Please help

 

[Mike]

This likely indicates that the files haven't all been uploaded correctly. I would attempt to reupload the files, focusing on library/XenForo/Model first. You should then use the "file health check" in the control panel to see if anything is listed as being incorrect.

 

[indicator]

This likely indicates that the files haven't all been uploaded correctly. I would attempt to reupload the files, focusing on library/XenForo/Model first. You should then use the "file health check" in the control panel to see if anything is listed as being incorrect.

i have check the file health and it's showing All 1,097 checked files are present and correct. should i still upload the library/xenforo/model

 

[Mike]

Actually, I suppose I should check -- are you still getting this error or did it only happen once?

If it only happened once (or in the past only), then it sounds like it was a "race condition" from having some newer files and some older files while you were uploading.

 

[indicator]

Actually, I suppose I should check -- are you still getting this error or did it only happen once?

If it only happened once (or in the past only), then it sounds like it was a "race condition" from having some newer files and some older files while you were uploading.

HI Mike, I got that error only once, now it's all fine. appreciate your assistance